X Crashing on surface rough pocket

[Bruce Caulley]

Morning all,

I have a solid model that I can't get a surface rough pocket to work. I get:

 

Bad trim surface found - use analyse test surfaces check model to find others

 

and:

 

Toolpath calculation error, contact your Authorised mastecam reseller.

 

And then it usually crashes.

 

Model is a solid supplied by the customer, there are no surfaces. If I analyze it it says 0 errors so does anyone know WTF is going on?

 

BTW I tried the new HS toolpaths too with the same result.

 

Bruce

[Thad]

Hey Bruce,

 

I realize it's a workaround, but what if you created surfaces from the solid and then cut the surfaces. Something to get you by....

 

 

Thad

[Bruce Caulley]

Thad, I'll have to I think.

 

ftp://www.ppcadcam.com/Mastercam_forum/MCX_Files/PITA.MCX

 

If anybody wants to have a look.

 

 

Bruce

[Thad]

Bruce,

 

I get the "no matching op file" error and then it crashes Demo every time.

 

Sorry bud, but it's time for bed. My 10 day weekend has come to an end and I have to work tommorow.

 

Thad

[Bruce Caulley]

Thanks Thsd

 

I just created surfaces from solid and get the same problem.

 

Bruce

[DavidB]

What file type was it from the customer?

[Bruce Caulley]

IGES I did the fixture assembly design in solidworks and then inported the lot into MC as a parasolid.

 

I have tried creatinf surfaces and then creating solid from surfaces, but it goes no-where from there.

 

Next attempt: Re-import the IGES direct. (Sounds obvious now doesn't it)

 

Bruce

[Bruce Caulley]

NO JOY!!

 

Still nothing.

[gcode]

I'm getting the same thing in MR2

I tried putting pathes on some of those funky holes in the corners, but it didn't help.

 

[ 04-24-2006, 12:20 AM: Message edited by: gcode ]

[Bruce Caulley]

I got it to work finally. I imported into SW, converted to step, imported into MC as surfaces, converted to solid with a 0.1mm edge tolerance.

 

I think this one might need to go to QC?

 

Bruce

[Greg Williams]

Interesting, This one.

 

I imported it into Catia ran all of the body checks know to man and found nothing.

 

Mastercam X certinally found something though.

[Bruce Caulley]

That's what I found strange too. SW coulnd't find anything and an MC solid had no errors. When I imported it as an IGES direct into MC I got an untrimmed error, but they are 2 a penny on an iges model anyway. I'll send it to QC in the morning.

 

Bruce

[gcode]

I imported the model into SW2007 beta1 and ran

import diagnostics. It found one bad face in one of those holes that break into the floor.

Repairs were successful and I broght the new solid back into X. Still got the same error

when applying toolpaths though.

[Pete Rimkus from CNC Software Inc.]

Way back to the 1st post...

 

-------

"...Bad trim surface found - use analyse test surfaces check model to find others..."

-------

 

When working with just the surfaces (instead of the Solid) did you try Analyze/TestSurfaces to see if it pointed out the problem surface(s)?

[Müřlıń®]

Hey Bruce, it seems to me the bad trim areas are the three side drilled holes in the part.

 

Since you already did the part I didn't try to plug them up, but I suspect that's where the problem is.

 

Maybe plug them up and cut them out after it is a parasolid

[Bruce Caulley]

Pete, I tried those checks and didn't get a problem. Did you get any on your system? Once it came in from SW it was a good solid and "Analyze check solid" found zero errors. creating surfaces from solids gave me a couple of untrimmed surfaces, but who hasn't had those before. Even selecting just the flat floors in the pocket and using a boundary gave me a crash.

 

Anyway, the job is done now. I didn't really need to use a surface path on this and would have normally just used 2d pockets on geo broken at intersections, but I thought it strange enough that I ended up spending 2 hours arsing about on something that would have only saved me 5 minutes and would have generated a longer cycletime anyway. We've all done that before

 

Thanks for the help fellas

 

Bruce

[Müřlıń®]

I messed with your file for a few min Bruce.

 

Your error comes from a bad surface trim carrying over to the parasolid.

 

All I did was to convert back to surfs and untrim the two bad trim surfs on the end of the part where the 2 side holes are drilled thru the corner radius and I was able to crunch the rough/pocket/.

[Bruce Caulley]

 

Crashes every 2 minutes now!!!!!!!!!!!!!!! I am editing points picked direct from the solid for drilling and it just gives me the flick. Where does MC store the error log?

 

Bruce

[Müřlıń®]

Something tells me it may also have something to do with the buggy WCS.

 

What I did was to IGES out the surfs so the WCS got wiped clean. I deleted the tube surfs for the 2 side holes. But maybe it is just an X thing....***shrugs***

 

I was in ver 9 BTW when I recrunched the rough/pocket.

 

I always fall back on 9 the first sign of trouble and bypass the frustration...

 

Murlin teh has no loyality to X....

 

I have had several jobs that X would NOT do, but 9 worked flawlessly....not to bash X because I like it alot.....I just need to get er done....

[Bruce Caulley]

I think the solid chaining is the problem on this particular model. I now have a drilling op on the side with 4 points, but they all backplot as 1 hole in the wrong position. This isn't the first problem I have had with solid chains/points with models from this customer, so I will bundle them up and send them to QC.

 

Bruce

[DavidB]

Bruce I've been on vacation I had a look at your file and I had no prob creating a toolpath.

I created surfaces from the solid it had 3 self intersecting surfaces I deleted them used the surfaces as geom in your toolpath and it generated in less than 30 seconds.

There are 3 points color 14 where the 3 bad surfaces where.I put it back on the FTP site as Pita_Dave

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